C21H16O5
44 compounds have this formula on CompoundList.
- Molar mass
- 348.35g/mol
- Monoisotopic mass
- 348.0998Da
- Atoms
- 42
- Elements
- 3
- Rings plus double bonds
- 14
The formula C21H16O5 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms and 5 oxygen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 2172.41%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 164.63%1.008 × 16 = 16.128 g/mol
- O Oxygen × 522.96%15.999 × 5 = 79.995 g/mol
Compounds with the formula C21H16O5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 44 of 44 compounds
![3-(5-Methyl-7-oxo-3-phenyl-7H-furo[3,2-g]chromen-6-yl)propanoic acid chemical structure, C21H16O5, CAS 777857-48-4](/s/WVDQTICJJSVLMO-UHFFFAOYSA-N.svg)
![(4,9-Dimethyl-7-oxo-3-phenyl-7H-furo[2,3-f]chromen-8-yl)acetic acid chemical structure, C21H16O5, CAS 853892-52-1](/s/WJQHNEWGCZKROX-UHFFFAOYSA-N.svg)
![2-([1,1'-Biphenyl]-4-yl)-2-oxoethyl 2,4-dihydroxybenzoate chemical structure, C21H16O5, CAS 923147-08-4](/s/BLGBOHSWUPDLRN-UHFFFAOYSA-N.svg)
![(2,5-Dimethoxyphenyl)(5-hydroxynaphtho[1,2-b]furan-3-yl)methanone chemical structure, C21H16O5, CAS 117932-38-4](/s/JJNKBDMMRLAFAP-UHFFFAOYSA-N.svg)
![2-[5-Methyl-3-(4-methylphenyl)-7-oxo-7H-furo[3,2-g]chromen-6-yl]acetic acid chemical structure, C21H16O5, CAS 853892-67-8](/s/DKDQZTRRMYSVQA-UHFFFAOYSA-N.svg)
![2-(3,4-Dimethoxyphenyl)-3-hydroxy-4H-benzo[h]chromen-4-one chemical structure, C21H16O5, CAS 113134-53-5](/s/QKKFAWYMSIFENP-UHFFFAOYSA-N.svg)
![6'',6''-Dimethyl-3',4'-methylenedioxypyrano[2'',3'':7,8]flavone chemical structure, C21H16O5, CAS 64316-98-9](/s/VTEDSEHLMNTMAV-UHFFFAOYSA-N.svg)
![8-(4-Methoxybenzoyl)-4,9-dimethylfuro[2,3-h]chromen-2-one chemical structure, C21H16O5, CAS 352326-68-2](/s/DGVYQOPTGWTJJW-UHFFFAOYSA-N.svg)
![Phenyl 2-[(3-methoxybenzoyl)oxy]benzoate chemical structure, C21H16O5, CAS 445463-45-6](/s/MZXLSEBFYXRLLN-UHFFFAOYSA-N.svg)
- 6-Ethyl-7-methoxy-4-(2-oxo-2H-chromen-3-yl)-2H-chromen-2-one858763-87-8C21H16O5
- Benzyl 4-benzoyloxy-2-hydroxybenzoate111988-90-0C21H16O5
- 7-Methoxy-2,2-diphenyl-1,3-benzodioxole-5-carboxylic acid717131-59-4C21H16O5
- 3-(3,4-Dihydro-2H-1,5-benzodioxepin-7-yl)-5-methyl-7H-furo[3,2-g]chromen-7-one1190294-44-0C21H16O5
- Benzyl 2-((2-hydroxybenzoyl)oxy)benzoate86811-43-0C21H16O5
- 3-(2,3-Dihydro-1,4-benzodioxin-6-yl)-5,6-dimethyl-7H-furo[3,2-g]chromen-7-one1351686-45-7C21H16O5
- 3-(2,3-Dihydro-1,4-benzodioxin-6-yl)-5,9-dimethyl-7H-furo[3,2-g]chromen-7-one1351686-74-2C21H16O5
- 3,3'-[(4-Hydroxyphenyl)methylene]bis[4-hydroxybenzaldehyde235106-86-2C21H16O5
- 2,5-Bis(1,3-benzodioxol-5-ylmethylidene)cyclopentanone5447-52-9C21H16O5
- Benzyl 2-[(phenoxycarbonyl)oxy]benzoate78899-24-8C21H16O5
- Methyl 2-(3,6-dihydroxy-9H-xanthen-9-yl)benzoate136205-88-4C21H16O5
- 4-{4-[(Benzyloxy)carbonyl]phenoxy}benzoic acid918797-35-0C21H16O5
- 4,9-Dimethoxy-7-(2-phenylethenyl)furo[3,2-g]chromen-5-one79611-35-1C21H16O5
- 3-Methoxy-1-methyl-12-oxo-12H-benzo[b]xanthen-11-yl acetate89141-01-5C21H16O5
- 5-Acetyl-4-hydroxy-2-methoxyfluoranthen-8-yl acetate88070-17-1C21H16O5
- 9-O-Benzyl-8-O-Methyl-urolithin C713519-22-3C21H16O5
- 8-(Benzyloxy)-3-hydroxy-9-methoxy-6H-benzo[c]chromen-6-one2135975-41-4C21H16O5
- 4-[4-(4-Carboxyphenyl)-3-(hydroxymethyl)phenyl]benzoic acid2099718-80-4C21H16O5
- 4,9-Dimethoxy-7-[(E)-2-phenylethenyl]furo[3,2-g]chromen-5-oneC21H16O5
- [5-(1-Hydroxyethylidene)-2-methoxy-4-oxofluoranthen-8-yl] acetateC21H16O5
Frequently asked questions
What is the molar mass of C21H16O5?
The molar mass of C21H16O5 is 348.35 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms and 5 oxygen atoms. The monoisotopic mass is 348.0998 Da.
How many compounds have the formula C21H16O5?
CompoundList lists 44 compounds with the molecular formula C21H16O5, including Defucogilvocarcin V, 3-(5-Methyl-7-oxo-3-phenyl-7H-furo[3,2-g]chromen-6-yl)propanoic acid, 5,9-Dimethyl-7-oxo-3-phenyl-7H-furo(3,2-g)(1)benzopyran-6-acetic acid. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C21H16O5?
C21H16O5 has a degree of unsaturation of 14. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.